JPH02138396U - - Google Patents

Info

Publication number
JPH02138396U
JPH02138396U JP4468889U JP4468889U JPH02138396U JP H02138396 U JPH02138396 U JP H02138396U JP 4468889 U JP4468889 U JP 4468889U JP 4468889 U JP4468889 U JP 4468889U JP H02138396 U JPH02138396 U JP H02138396U
Authority
JP
Japan
Prior art keywords
current
light emitting
level
emitting element
light
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP4468889U
Other languages
English (en)
Japanese (ja)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP4468889U priority Critical patent/JPH02138396U/ja
Publication of JPH02138396U publication Critical patent/JPH02138396U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Fire-Detection Mechanisms (AREA)
JP4468889U 1989-04-17 1989-04-17 Pending JPH02138396U (instruction)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4468889U JPH02138396U (instruction) 1989-04-17 1989-04-17

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4468889U JPH02138396U (instruction) 1989-04-17 1989-04-17

Publications (1)

Publication Number Publication Date
JPH02138396U true JPH02138396U (instruction) 1990-11-19

Family

ID=31558212

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4468889U Pending JPH02138396U (instruction) 1989-04-17 1989-04-17

Country Status (1)

Country Link
JP (1) JPH02138396U (instruction)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2023115098A (ja) * 2019-03-27 2023-08-18 ホーチキ株式会社 試験システム、及び試験装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52152273A (en) * 1976-06-11 1977-12-17 Matsushita Electric Works Ltd Action checking method of light dimming type smoke sensor
JPS533880A (en) * 1976-07-01 1978-01-13 Matsushita Electric Works Ltd Sensitivity checking method for scattered light type smoke detector

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52152273A (en) * 1976-06-11 1977-12-17 Matsushita Electric Works Ltd Action checking method of light dimming type smoke sensor
JPS533880A (en) * 1976-07-01 1978-01-13 Matsushita Electric Works Ltd Sensitivity checking method for scattered light type smoke detector

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2023115098A (ja) * 2019-03-27 2023-08-18 ホーチキ株式会社 試験システム、及び試験装置

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